In that year, following the young man's instinct to travel, he accompanied his brother William to Minnesota and worked with him as a carpenter for five years. He returned to Bristol in the fall of 1860 and continued in the carpentry trade with Edward Hall until he answered the call to arms on his 26th birthday, July 22, 1862.
Augustus H. Funck and his brother Henry enlisted in Company K, 16th Connecticut Volunteer Infantry, which was organized in August 1862. Moving quickly to the front in the Union cause, Funck distinguished himself as a good soldier. He was injured in the foot at Antietam but recovered to join his company in battles throughout the South until his capture by Confederate forces in North Carolina in 1864. He spent four months at the Andersonville Prison and five more in the Florence Stockade at Florence, South Carolina, where his brother Henry died.
The horrors of Andersonville and Florence weighed heavily on him. He spent several months in rest and recuperation before entering into the furniture and undertaking business with his father at the firm incorporated in October 1865 as C. Funck and Son.
Augustus H. Funck held several other positions in Bristol while he served as head of its largest furniture store. In 1871, he was appointed at a Town Meeting as keeper of the Forestville jail, a position he held for several years. He was an active member of the Masons and the G.W. Thompson Post 13, GAR and played an active role in the Trinity Episcopal Church, where he served over the years in the capacity of vestryman, treasurer and senior warden.
Shortly before his death in 1911, Augustus Funck instituted a legal name change, dropping the letter "c" from the family and firm name to prevent mischievous corruption of the company name by less than savory characters who hung around the railroad depot across the street.